Collapsible derrick.



MILES P. SHOUP, OF SPRINGDALE, PENNSYLVANIA, ASSIGNOR OF ONE-FOURTH 'IO JAMES W. JOHNSTON, OF SPRINGDALE, PENNSYLVANIA.

COLLAPSIBLE DERRICK.

To all 'whom t may concern.'

Be it known that I, Minus P. SHOUP, a citizen of the United States, and resident of Springdale, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Collapsible Derricks; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to collapsible derricks.

The object of my invention is to provide such a derrick which is adaptable for use in connection with buildings where there is a porch or other projecting structure eX- tending out from the building, and to provide means for bridging over the space from the piano or other object lifted to the window under such conditions, so that the piano may be moved into the window or doorway with a minimum expenditure of time and labor.

To these ends my invention comprises the novel features hereinafter set forth and claimed.

In the drawing Figure 1 is a view of my improved derrick erected in front of the building and showing the piano elevated thereby. Fig. 2 is a vertical sectional view showing the piano raised and the platform or skid shown in dotted lines in position to sustain the piano while it is being moved into the window;w and Fig. 3 is a longitudinal sectional View showing the derrick when in collapsed condition.

Referring to the drawing, the numeral 2 designates the lowermost section which is made up of pipe of suitable diameter, the lower ends of the pipes being threaded and connected to the T-connections 3 which form the feet of the derrick, and the lower halves of said T-connections are filled up with wood 1, or other suitable material. A rod 5 connects the T-connections 3 and forms a bra-ce at the lower end of the derrick.

rIelescoping within the lower section 2 of the derrick is the intermediate section 6 formed of pipe of such diameter as will lit neatly within the pipes of the lower section, so as to slide up and down therein. rIhe sections 2 and 6 are perforated as at 7 so that when the derrick is elongated the perforations 7 will register with each other and the pins 8 are then introduced as shown Specification of Letters Patent.

Application filed February 107 1913.

Patented Jain. 13, 19111.

Serial No. 747,580.

in Fig. 1 to hold the parts in this extended position.

The third section 9 is illustrated which fits within the section 6 and like-wise is con nected with the section G by pins 10 when the derrick is extended as indicated in Fig. l.

It is apparent that any suitable number of sections may be employed according to the height to which it is desired to extend the derrick. The uppermost section 9 has the T-connections 11 at the upper ends and the rod 12` connects said T-connections and forms the support for the main pulley-block 13. This cross-bar 12 also forms the support for the pulleys 14. Cables 15 pass over the pulleys 14 and said cables are connected with the outer ends of the movable bar 1G which engages the guides 17 on the lower face of the platform or skid 18. This platform 18 may be made of wood or any suitable material and adjacent to the inner end is the cross beam 19. Vhen the platform 18 is in the position shown in full lines Figs. 1 and 2, it is suspended by the bar 1G engaging the ends of the guide 17 and is held in a vertical position. The cable 2O is connected to the upper or inner end of the platform 18 and said cable is adapted to pass up and into the window 21 through which the piano 22 or other article of furniture is to be admitted to the house or apartment.

lNhen the derrick is to be erected, the sections are first drawn out and connected by the pins 8 and 10 whereupon the derrick is raised, and, by means of the guy lines 23 which are secured to any post or convenient support along the side-walk, the derrick is thus held securely in its vertical position. 'Ihe piano is then connected to the lifting cable 24 and by means of this cable is elevated until it is opposite the window 21 as shown in Fig. 2. The piano is supported in this position until the operators by pulling on the cables 15 raise the platform 18, and, when the platform has been raised in this manner to the proper height, the operator at the window by means of the cable 20 tilts the platform until it is brought around into a horizontal position with the inner end resting upon the sill of the window and the cross beam 19 abutting against the outer edge of the sill, so as to prevent the further inward movement of the platform. The cables 15 are then wrapped around the pins 26 at the lower end of the derrick and the platform 18 is held securely in the position indicated in dotted lines in F ig. 2. The operators then ease up on the cable 24 supporting the piano until it is lowered onto the platform 18 and it is then a simple matter t-o move the piano along the platform or skid 18 into the window 21. Having disposed of the piano in this way, it is a simple matter to lower the platform 18, release the guylines 23, and pins 8 and 10, whereupon the sections of the derrick are moved into each other so as to bring the derrick into the compact form indicated in F ig. 3 when it may be readily loaded onto the wagon or moving van.

The operation of lifting a piano and introducing it into the second or third story or even to a higher level is accomplished with ease and in a very short time without liability to accidentdue to the falling of the piano, and furthermore by the use of the platform 18 the derrick may be set up in front of a porch or other projecting portion of a building and the space between the derrick and window bridged by the platform 18, so that no difficult-y in moving the piano over such a distance from the building into the window is encountered.

The device is simple in construction and the parts are not liable to get out of order. Furthermore the derrick can be erected and the piano or other article moved into the building without liability of defacing the building in any way due to the piano swinging in toward the building and defacing the exterior thereof or the framework of the window through which it is admitted.

lhat I claim is:

1. The combination of a derricl, means for lifting the object to be raised, a transverse bar suspended therefrom, means caron said derriclr, a transverse bar, cables connected to opposite ends of said bar and passing over said pulleys, a platform, and a guide on said platform withY which said bar engages, said platform being longitudinally 6o movable and tiltable on said bar.

4. The combination of a derricl, means for lifting the object to be raised, a transverse bar suspended from said derrick, means carried by said derrick for raising said bar, 65 a platform, a guide on said platform engaged by said bar, said platform being longitudinally movable and tiltable on said bar and a cable connected to one end of said platform.

5. The combination of a derriclr, means for lifting the object to be raised, a transverse bar suspended from said derricl, means carried by the derrick for raising said bar, a platform, and a guide on the lower face of 75 said platform engaged by said bar, said platform being longitudinally movable and tiltable on said bar.

ln testimony whereof, the said MILES P. SHoUP have hereunto set my hand.

Miras P. sHoUr.

lVitnesses ROBERT C. TOTTEN, Jol-IN F. WILL.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patente.; Washington, D. 0. 

